Architecture Documents

FreeCAD Tech Draw workbench allows good dimensioned drawings, see examples at Fabrication Drawings

We can copy that into Google Docs and add more symbols, as in example above.

Do you think Sweet Home can generate floor plans?

Floor plans are also doable in Arch Workbench in FreeCAD - 

For elevations and roof - I would use Tech Draw as the base, it already allows different side views. If we have an entire model in FreeCAD, the drawing would be perfect. We can copy that into Google Docs and annotate as needed.

For this, a library of architecture symbols - icon libraty - is useful - to be generated in Inkscape. We have a process for generating icons at Icon Source.

Electrical - once again use FreeCAD Tech Draw as base, or Arch Workbench workflow, and post-process in Google Docs with icon library.